Oxyacetylene-blowpipe.



0. T. ANDERSON.

OXYACETYLENE BLOWPIPE.

APPLICATION FILED JUNE l. 1918 1,99,535; Patented Apr. 8, 1919.

Fig, J.

IN VEN TOR.

O. .Andersan,

ATTORNEY U l 'il oscnza 'r. ANDERSON, or WAT'EBLOO, IOWA.

' oxYAcETYLENn-BLowPrPE.

To all whom it may concern:

Be it known that I, OSCAR T. ANDERSON, a citizen of the. United States of America, and a resident of Waterloo, Blackhawk county, Iowa, have invented certain new and'useful Improvements in Oxyacetylene- Blowpipes, of which the following is a specification. a a

My invention relates to improvements in. oxyacetylene blowpipes, and the object of my improvement is to eificiently and safely intermlx oxygen blowpipe for autogenic welding of iron and steel, by means of an improved and modified interior structure of the device and special arrangement and form "of the channels and mixing-means thereof.

This object I have accomplished by the are hereinafter described and claimed, and which are illustrated in, the accompanyin drawings, in which Figure 1is a medial longltudinal section of my improved oxyacetylene blowpipe, with parts broken away, and Fig. 2is a magnified front ele- Yation of the conical terminus of the body or shank of the blowpipe, in detail.-

-Similar-numerals o responding parts throughout the several means which views.

The use of the oxyacetylene blowpipe in the autogenic welding and like operations on steel and iron is well-known, but the safe application of same is desirable coupled with a simplified construction, and a structure whose channels andmixing means may be easily and conveniently cleaned or de-' prived of adherent coatings 'or masses of carbonaceous deposits. These features are embodied in my improved construction.

Referrin to Fig. 1, the numeral 1 denotes an e ongated conical tip or orificed nozzle, fice or channel 2, the basal part of said nozzle having an annular shoulder 14, and having a conical hollow 15 alined and communicating with said orifice 2.

The body or shank 7 of the blowpipe has a' conical terminus 8 closely fitting the conical hollow 15 of said tip and the shank is diminished to approach said conical ter; minus 8 in an exteriorly-threaded cylinder 4.

The numeral 3 denotes a hollow nut having interior threads fitting said threads 4, and an interior shoulder fitting the shoulder 14, whereby, when the nut is seated Specification of Letters Patent. Appfloation filed .Tune 1, 1918. Serial no. 237,691.

and acetylene gases in a reference denote corhaving the central longitudinal ori-' may ave clogged the channels. 'nels mentioned are easily drilled through Patented Apr. 8, 1919.

around the enlarged base 5 of the nozzle to engage its shoulder 14, and is meshed with the threads 4 on said shank, the nozzle part is drawn toward the shank to cause the fitted surfaces of the cone 8 and the hollow 15 to closely coincide to prevent leakage of gas therebetween. I

The shank 7 contains the angular channels of capillary size shown at 10 and 11 and leading from the conduits 12 and 13 respectively for the carriage of oxygen and acetylene gases under a required pressure. These channels have their terminal openings at opposite locations in the conical surface of the cone 8, and the surface of said cone is removed by a planar section on both. sides leading from said terminal openings to the apex of the cone to provide shallow passages for gases issuing from said openings converging toward said apex, meeting at the apex to immediately deliver into the capillary orifice or channel 2 in said nozzle 1. In other words, all the channels and passages mentioned are capillary, without enlarge-- ments where gases could accumulate in I either a mixed or unmixed condition, and

this is of the essence of my invention, which is to prevent any such accumulations, which are dangerous in the mixing of oxygen andacetylene gases, as such mixtures when pocketed structure, may back fire and explode.

The channels mentioned, therefore, are of restricted and capillary dimensions, and

serve as conduits purely, although the converging planar passages 9 over the cone 8 permit the said gases to meet and mix under combined pressure at the apex of the cone to be delivered through the nozzle orifice 2.

Another important feature of the "invention is the construction thereof permitting the disassembling of the nozzle 1 to expose the conical surfaces 15 and 8, and the planar passages 9. This permits the ready removal of an deposit of carbonaceous matter which The chanthe respective structures, and the conical surfaces as easily formed and fitted accurately together when assembled.

' Having described my invention, what I claim as new, and desire to secure by Letters Patent is:

1. Ina device of the character described, a shank having channels for the conveyance in chambers in a highly .heated of gases, and having a conical terminus whose opposite parts have shallow parts removed to leave planar faces converging from the openings ofsaid channels to the apex,

5 and an orificed nozzle having a conical basal hollow fitted removably upon said conical terminus to provide at the location of said planar faces capillary passages meeting and delivering into the capillary orifice of the 10 nozzle.

, 2. In a device of the character described, a shank having capillary channels for the conveyance of gases, and, having a conical terminus whose opposite parts have shallow 15 planar .faces along the cone thereof leading from the openings o f theichannels to the apex of the cone, capillary orifice into which said shallow planar faces lead, said nozzle being fitted 20 over said conical terminus to provide shallow capillary passages therebetween only at the location of said planar faces, and

a delivery-nozzle having a pressure, a delivery-nozzle mounted upon said body having a capillary delivery orifice alined with said body,

provide therebetween shallow flattened capillary passages leadin into said delivery-ori ce.

4. Ina device of the character described, 5

astructure terminating in a. delivery-nozzle, said structure having separated channels for gases, and having flattened passages leading from said channels into said nozzle,- all. said communicating conduits being of capillary dimensions.

Signed at Waterloo, Iowa,

7 this 17th day of May, 1918'.

OSCAR T. ANDERSON.

the joining surfaces 1 of said body and nozzle being formed to y from said channels 

